Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
040063lightly pollutedexcellent51excellent
030053goodexcellent51excellent
020042goodexcellent31excellent
010041goodexcellent41excellent
000039goodexcellent31excellent
230045goodexcellent41excellent
220054goodexcellent51excellent
210048goodexcellent41excellent
200041goodexcellent31excellent
190031goodexcellent31excellent
180024goodexcellent31excellent
170023goodexcellent21excellent
160023goodexcellent31excellent
150027goodexcellent31excellent
140026goodexcellent41excellent
130028goodexcellent51excellent
120031goodexcellent41excellent
110029goodexcellent41excellent
100047goodexcellent61excellent
090054goodexcellent81excellent
080066lightly pollutedexcellent91excellent
070061lightly pollutedexcellent101excellent
060085lightly pollutedexcellent111excellent
050052goodexcellent111excellent